package acm.蓝桥24;

import java.io.*;

class Reader2 {
    static StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(System.in)));
    static PrintWriter pw=new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));

    public Reader2(Object... o) {
    }

    public int nextInt() {
        try {
            in.nextToken();
        } catch (Exception ignored) {}
        return (int) in.nval;
    }
}